<ul class="nav-links">
	<li>
		<a href="/">
			<img src="https://free-images.com/lg/d337/matterhorn_mountain_high_mountains.jpg" class="nav-links__icon"//>
		</a>
	</li>
</ul>
<style>
.nav-links__icon{
	transition:transform 0.2s ease-out;
}
.nav-links a:hover > .nav-links__icon,.nav-links a:focus > .nav-links__icon{
	transform:scale(1.3);
}
</style>